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Finding the Fourth Proportional to 139,299.68, 192,277.32 and 88,998.56

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Solution

The fourth proportional to 139,299.68, 192,277.32 and 88,998.56 is: 122,845.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,299.68 : 192,277.32 = 88,998.56 : x
  2. Step 2: Convert to fraction form
    139,299.68/192,277.32 = 88,998.56/x
  3. Step 3: Cross multiply
    139,299.68x = 192,277.32 × 88,998.56
  4. Step 4: Simplify right side
    139,299.68x = 17,112,404,600.66
  5. Step 5: Solve for x
    x = 17,112,404,600.66/139,299.68
  6. Step 6: Final answer
    x = 122,845.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.